Nail.



H.'L. C. WENK, JR.

NAIL.

APPLICATION man DEC. 4. 1915.

1,206,068. PatentedNov. 28,1916.

i the head.

OFFICE.

HENRY L. C. WENK, JR., 015 NEW YORK, N. Y.

NAIL.

Specification of Letters Patent.

Patented Nov. '28, 1916.

Application filed December 4, 1915. Serial No. 64,974.

To all whom it may concern Be it known that I, HENRY L. C. WENK, Jr., a citizen of the United States, residing at Brooklyn, in the county of Kings, city and State of New York, have invented oertain new and useful Improvements in Nails, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to certain new and useful improvements in nails or fastening devices, having for their chief object the effective use in securing corrugated iron roofing and walling, sheet metal cornice work and flashing in position, the value .of the same being the fastening of solidly corrugated or plain sheets to buildings, and at the same time the prevention of a leak where the nail is driven through the iron.

The invention consists essentially in a nail having a head of relatively soft non-corrosive metal, said head being provided with one or more thin flaring flanges projecting below the base thereof and. slanting outwardly from the center so as to make a snug Watertight joint when the nail is driven tightly in position. The nature of the head of the nail keeps the moisture from corroding the iron wherever the galvanizing is broken through at the point where the nail is driven in. The head of the nail being of lead or other soft metal is not liable to rust or to be otherwise destroyed, and, thence is protected from corrosion, the same being an important point since with the ordinary nail, even though it is galvanized before driving, the same often destroys or breaks off most of the galvanizing from the head and thereby exposes the head to corrosion.

The invention, therefore, consists essentially in the-construction, arrangement and combination of the various parts, substantially as will be hereinafter described and then more fully pointed out in the claims.

In the accompanying drawing illustrating my invention: Fi re 1 is a perspective view of a nail embo yin my present improvements; Fig. 2 is a si e elevation of the shank and shows the head in section; Fig. 3 is a sectional view of a modified form of Similar characters of reference designate corresponding parts throughout the differ- .ent figures of the drawing.

head however,-

1 designates the shank, which may be in the form of an ordinary wire nail with the pointed end 2 and the opposite flat driving end 3, which with a nail as ordinarily formed, constitutes the common head. Al-

though I have shown this Wire nail with a,

round form and of the style illustrated, I do not wish to be restricted thereto, but reserve the liberty of practising the invention with other forms and shapes of nail shanks, either round or square, or of wire or other material, within very ide limits inasmuch as the invention is broadly applicable for use with any kind of a shank.

4 denotes the head of my improved nail. It is usually of lead, though it may be of any other relatively soft metal which is not liable to corrode. The head 3 and contiguous end of the shank 1 are embedded within the head 4., as indicated in Figs. 2, 3 and 4' of the drawing, said soft'metal head being cast upon the end of the shank. The upper part of the head 4 whic'hconstitutes the driving surface is preferably of convex or semi-circular form and is flat on its underside at 5,.

The flat underside 5 of the head 4 is provided with anintegral flaring and comparatively thin flange 6. This flange springs from the lower face 5 of the head 4 at a.

7 point part way between the peripheral edge of said face 5 and the shank 1 so that a portion of the face 5 lies outside of the flange 6. Flange 6, therefore, has an inner substantially concave or conical recess around riphery of the flange 6 is substantially below v the peripheral edge of the face 5.

The head 4 with its outwardly flaring flange 6 is cast around the head 3 and the upper portion of the shank 1 of the nail.

so that the parts are firmly united together. When the nail is driven through the iron of the corrugated or plain roofing or other part, which it .is desired to secure in place, it is obvious that an opening is made in the corrugated roofing which unless thoroughly protected would admit moisture by afi'ording a space around the nail through which water, rain or dew might come into contact with the unprotected inner side of the work and damage the same.

carrying the flange 6, it will With my improved I be observed that when the nail is driven home, the flange 6 will flatten between the .iron surface and the head face 5 and thus conform to the surface of the iron against which the head is being driven and make a snug and water-tight joint which will become tighter the more securely the nail is driven, and in this. way the shank of the nail will be protected against moisture, and also the opening through which the nail is being driven will be so completely closed and covered that no moisture can possibly find its way through the same.

Sometimes I find it convenient to employ the form of the invention illustrated in Fig. 3 which shows not only the flaring flange 6, but a concentric inner similar flange 7 similarly integral with the head 4 and springing from the base 5 at a point between the flange 6 and the shank 1, though not touching the shank, being removed a short distance therefrom. This extra auxiliary or supplementary flaring or similar flange 7 insures a more effective water-tight joint around the shank 1 and gives therefore a double protection. While I have thus shown one extra flange, it may be possible in other cases to further multiply the number of flanges.

Many other changes in the details of construction of the various parts may be made without exceeding the scope of the invention, and I, therefore, reserve the liberty of making such changes in the details consistent with the scope of the appended claims as may be found necessary from time to time in order to achieve the best results.

With a nail of this kind there will be a very firm connection of the parts with which it is used, and a very eflective prevention of rust and corrosion; also a construction like this is lighter and has an advantage in pro ects a comparatively thin outwardly flaring flange, there being a concave recess within the flange and immediately around the shank, and there being also a recess between the outer periphery of the flange and the adjacent peripheral edge of the lower face of the head.

2. In ai-nail, the combination of a shank, and a head of relatively soft metal, said head being formed on its underside with a fiat face provided with a dependent flaring flange concentric with the shank, and there being a concave recess within the flange immediately around the shank, and there be ing also an angular recess between the lower face of the head and the adjacent outer surface of said flange, the outer peripheral edge of'the flange being directly below the outer peripheral edge of the lower face of the' head.

In testimony whereof I aflix my signature.

HENRY L. C. WENK, Jr. 

